Electronics and Computer

No.	Question	Answer
01	The unit of frequency is	Hertz
02	The unit of resistance is	Ohm
03	The device which makes or breaks a circuit is	Switch
04	The path of an electric current is known as a	Circuit
05	Device which opposes the flow of electric current is known as	Resistor
06	Arc Lamp was invented by	C.F.Brush
07	Television was invented by	J.L.Baird
08	Transistor was invented by	J.Bardeen,W.Shockley and W.Brattain
09	The unit of wavelength of light is	Angstrom
10	A device which converts light into electricity is known as	Photo cell
11	Hertz was the first to discover	Radio waves
12	Marconi invented	Radio
13	In 1901,Marconi beamed a signal from Cornwall in England to	Newfoundland
14	Thomas Edison was an	American inventor
15	A glass tube with two electrodes is called a	Diode
16	Lee de Forest was an	American scientist
17	Lee de Forest discovered the	Triode
18	Radio and television transmit signals using	Electromagnetic waves
19	To turn pictures into electrical signals,television Cameras rely on	Photo-electric effect
20	Transistor was invented in the year	1948
21	The first electronic components invented were the	Thermionic valves
22	Microchip was invented in the year	1958
23	Microchip was invented by	Jack Kilby
24	The microchip invented first was also the first	Integrated circuit
25	Silicon and germanium are ideal examples of	Semi conductors
26	LED stands for	Light Emitting Diode
27	The first computer was invented in the year	1834
28	The first computer was invented by	Charles Babbage
29	The first computer invented was called	Analytical Engine
30	In the present day electronic machines,computers function as	Artificial brains
31	CAD means	Computer Aided Design
32	CPU stands for	Central Processing Unit
33	RAM stands for	Random Access Memory
34	J.J. Thomson was a	British physicist
35	In 1897,J.J.Thomson discovered	Electrons
36	A device used for increasing the strength of electric signal is called	Amplifier
37	The height of a wave is called	Amplitude
38	An electron carries a charge	Negative
39	In a transistor,a base is the	Filling in the semiconductor sandwich
40	The tube behind the screen in TVs and most computers is called	Cathode Ray Tube
41	The force which makes an electric current is called	Electromotive Force
42	Device used for measuring small amounts of electric current is called	Galvanometer
43	Sound too low to be heard by humans is called	Infrasound
44	VDU stands for	Visual Display Unit
45	One kilobyte is approximately	1000 bytes
46	DOS stands for	Disk Operating System
47	WORD STAR is a popular	Word processing programme
48	WORD STAR was developed by	Micro pro Company
49	PC stands for	Personal Computer
50	ALU stands for	Arithmetic Logic Unit
51	The VDU and Keyboard together form a	TERMINAL
52	The speed of the dot matrix printers is measured by CPS which stands for	characters per second
53	The speed of the line printers is measured by LPM which stands for	Lines per second
54	DBMS stands for	Database Management System
55	IBM is a famous computer company.IBM stands for	International Business Machines Corporation
56	ROM stands for	Read Only Memory
57	The actual machine of the computer is commonly known as	Hardware
58	The programs run on the computer are commonly known as	Software
59	All the output which is printed on paper is called	Hard Copy
60	The number of pixels on a computer screen determines a screes's	Resolution
61	A processor's speed is measured in	Megahertz
62	A software that assists the computer in performing instructions,is called as	system software
63	CAM stands for	Computer Aided Manufacturing
64	DPI stands for	Dots per Inch
65	DTP stands for	Desk Top Publishing
66	EPROM stands for	erasable and Programmable Read only Memory
67	A magnetic storage disk made out of a thin piece of plastic is called	Floppy Disk
68	A pictorial representation of the step by step sequence for solving a problem is known as a	Flow Chart
69	A measure of storage capacity equal to one thousand megabytes is one	Gigabyte
70	A variable whose value is accessible throughout the program is called	Global Variable
71	A huge,worldwide network of computers that communicate with each other,allowing global communications between users is known popularly known as	Internet
72	KB stands for	Kilobyte
73	LAN stands for	Local Area Network
74	A printer which uses light to transfer the image to paper is the	Laser Printer
75	Memory which retains all its contents even after the power is turned off is known as	Non-Volatile Memory
76	The result that is generated by the computer after processing the information provided to it is known as	Output
77	Electronic mail is more popularly known as	E-Mail
78	PILOT stands for	Programmed Inquiry Learning Or Teaching
79	PILOT was developed by	Doug Engelbardt
80	IQL stands for	Interactive Query Language
81	LOGO was developed by	Dr.seymour Papert
82	CAL stands for	Computer Assisted Learning
83	APT stands for	Automatically Programmed Tooling
84	`C'language was invented by	Dennis M.Ritchie
85	Modula-2 was developed by	Niklaus Wirth
86	Terminals that have their own memory are called	Smart terminals
87	The memory that needs electric power to sustain its contents is known as	Volatile Memory
88	MOS stands for	Metallic Oxide Semiconductors
89	Dvorak key board was designed by	August Dvorak
90	A simple device which functions as a simpler alternative to the keyboard is the	Mouse
91	Automatic drawing input device is called	Scanner
92	In the second generation computers,magnetic cores were used as	Main Memory Devices
93	LCD stands for	Liquid Crystal Display
94	RADAR stands for	Radio Detection and Ranging
95	RADAR works on the principle of	Echo
96	software-in-Hardware modules are called	Firmware
97	A device by which any microcomputer can use ordinary television set for producing output is called	RF modulator
98	EDSAC stands for	Electronic Delayed Storage Automatic Computer
99	EDVAC stands for	Electronic Discrete Variable Automatic Computer
100	EDSAC was developed in the year	1949
101	EDVAC was developed in the year	1952
102	ENIAC stands for	Electronic Numerical Integrator and Calculator
103	The most successful computing device in the ancient time was	Abacus
104	Use of some mechanism for the operation of a machine is known as	Automation
105	Radar contact with the moon was first made in	1945
106	Radar contact with Venus was first made in	1961
107	A system in which information is displayed on a television screen is known as	Video Text System
108	A modern means of communication in which the information is stored in a computer at a TV station is known as	Teletext
109	Global communication became possible by using	Satellites
110	Morse code was invented by	Samuel Morse
111	The code used in a teleprinter is the	Baudot Code
112	Teleprinter exchange is popularly known as	Telex
113	A device which converts sound waves into electrical waves is called	Microphone
114	AVC stands for	Automatic Volume Control
115	The device used to measure wavelengths of radio waves is	Wavemeter
116	A hollow metallic tube used in place of wire in electric circuits carrying high frequency currents is called	Waveguide
117	An instrument used to measure the intensity of radiations is the	Radiometer
118	An instrument used to measure electrical voltage is the	Voltmeter
119	VTVM stands for	Vacuum Tube Volt Meter
120	A circuit which maintains a constant voltage is called	Voltage Stabilizer
121	SCR stands for	Silicon Controlled Rectifier
122	A device used to increase or decrease electric voltageis called a	Transformer
123	A magnetic tape that records both audio and video signals is called a	Video Tape
124	The first electronic calculator was manufactured in 1963 by	Bell Punch Company,USA
125	MASER stands for	Microwave Amplification by stimulated Emission of Radiation
126	A computer which can handle a large volume of numbers is called a	Number cruncher
127	POST stands for	Power on Self Test
128	POST is a test carried out just after the computer has been	Switched on
129	An index of the files stored on a disk is called	Directory
130	CP/M stands for	Control program for Microcomputers
131	CP/M was developed by	digital Research Inc.,USA
132	MVS stands for	Multiple Virtual Storage Operating System
133	MVS is used in	Mainframe computers
134	The process of starting a computer is called	Booting
135	A group of four binary digits is called a	NIBBLE
136	BPI stands for	Bit per Inch
137	A smart card is a	multifunctional microprocessor
138	LIPS stands for	Logical Inferences Per Second
139	A computerized machine is normally called a	Robot
140	A robot is a machine directed by a	Computer
141	A robot which resembles a human being is called an	Android
142	PL/1 stands for	Programme Language-1
143	The language PL/1 has combined features of	COBOL and FORTRAN
144	BASIC stands for	Begineers All Purpose Symbolic Instruction Code
145	COBOL stands for	Common Busines Oriented Language
146	ALGOL stands for	Algorithmic Language
147	ALGOL was developed in the early 1960s in	Europe
148	COBOL was first introduced in the year	1961
149	FORTRAN stands for	Formula Translation
150	FORTRAN was developed and introduced by IBM in the year	1957
151	PL/1 was introduced in the 1960s by	IBM
152	COMAL stands for	Common Algorithmic Language
153	BASIC was developed by	John Kemeny and Thomas Kurtz
154	SNOBOL stands for	String Oriented Symbolic Language
155	SNOBOL was developed in	1962
156	LISP stands for	List Processing Language
157	LISP was developed by	John McCarthy
158	Loud speaker was invented by	Rice Kellogg
159	PROM stands for	Programmable Read Only Memory
160	Two types of RAM chips are	Dynamic,static
161	Data is fed into the computer by first converting it into	Binary codes